Girling clutch cylinder thread size

The pipe from my slave cylinder to the new master no matter how I try will not
screw on the old one does. Maybe something is wrong with the thread.Does
anyone know the thread size?
thanks

Inlet port = 7/16NF; outlet port = 3/8NF.

Use make sure the tube nut isn’t flared out from previous tightening.

Thank-you I’ll check threads for problems.

Its the plain area prior to the threads that gets swollen from the compressive forces not the threads per se.

So file down the plain area a bit?

Yes if it looks a bit swollen.

Robin
You remedy worked. I crimped,filed and sandpaper the pipe end and it worked.You saved me a ton of
time and work. Thank-you very much
Benny

Benny, where did you source that new Brake Master pipe fitting ?

Patrick

Patrick
The brake master cylinder came with 2 banjo fittings as you know. I was able to
use the pipe fitting from my old cylinder.
Benny

No prob, BTDT :)…

Same here; but my '66 FHC new Clutch. BM, and Servo all have old rusty fittings; I can’t find anyone in UK who sells these fittings. I thought of adapting to -AN fittings but DOT does not approve of non racing brake lines.

Patrick
'66 FHC